Abrasive Belt Grinder for Pressure Vessel Intersecting Line Welds

Abstract

The invention discloses a pressure vessel connecting pipe intersecting line welding seam abrasive belt grinding machine. A grinding head (1) is mounted on a first positioning plate (2), a deflection motor (3) is mounted on the first positioning plate (2), a driving gear (4) on the deflection motor (3) is meshed with an arc-shaped gear (5) which is fixed on a second positioning plate (6), a supporting seat (15) is arranged in a hinge seat (8) and supported on a shaft of a big gear (16), the big gear (16) is meshed with a small gear (18) on an output shaft of a rotation motor (17), and a self-centering chuck (19) is mounted at the bottom of the big gear (16). The pressure vessel connecting pipe intersecting line welding seam abrasive belt grinding machine is small and compact in structure, low in production cost, simple to control, high in accuracy and capable of realizing complex curve processing of a multi-position multi-posture abrasive-belt-grinding nuclear power vessel connecting pipe, and solves the grinding problem of a welding layer, a welding seam, a welding root, a welding rib and the like of a curved surface heap of a nuclear power high-pressure vessel connecting pipe.

Description

technical field [0001] The invention belongs to the technical field of grinding machines, and in particular relates to an abrasive belt grinder for pressure vessel joint intersecting line welding seams. Background technique [0002] The connecting pipes on the pressure vessels are located on the core shell or the head. Depending on the position and access angle of the pressure vessel nozzle, the connection between the nozzle and the cylinder body presents a corresponding intersecting line weld. The pressure vessel and the connecting pipe are grooved, and the two are welded together by surfacing welding. The following processing problems exist in the intersecting line weld of the pressure vessel nozzle: [0003] (1) Pressure vessel nozzle welds are generally made of nickel-based or special stainless steel materials, which are difficult to process and require high surface quality; and some pressure vessel products have extremely high safety requirements and are strictly prot...

AI Technical Summary

Problems solved by technology

[0003] (1) Pressure vessel nozzle welds are generally made of nickel-based or special stainless steel materials, which are difficult to process and require high surface quality; and some pressure vessel products have extremely high safety requirements and are strictly protected from halogen element corrosion, let alone Adopt methods such as carbon arc gouging, so it is necessary to choose a suitable grinding method and process;

[0004] (2) The processing allowance is large, and the weld reinforcement is generally above 5mm. It is difficult to meet the high-efficiency and large-surplus grinding for grinding wheel grinding, but the abrasive belt grinding known as "universal grinding" can be well Solve large margin grinding;

[0005] (3) The grinding process of the intersecting line weld is a typical curve processing, and the intersecting line welds of different parts are different, and the processing is extremely difficult

[0006] Moreover, my country lacks research on efficient processing methods and technologies for pressure vessel joint intersecting line welds. Relevant processing equipment is blocked by foreign technologies, and only backward traditional manual grinding can be used. The processing efficiency is extremely low, and the labor intensity of workers is high. The harsh working environment and serious dust pollution have restricted the processing accuracy and surface quality of the welding seam of the pressure vessel joint intersecting line, which has directly led to a large gap between domestic pressure vessel joints and developed countries in terms of processing methods and service life, which has seriously restricted Improvement of the overall level of domestic pressure vessel manufacturing

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